<style>
    .blocker {
        position: fixed;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        height: 100%;
        z-index: 999;
        background: rgba(0, 0, 0, 0.8);
        font-weight: bold;
    }
</style>
<dom>
    <div class="blocker">
        <label name="desc" style="pointer-events: none; user-select: none;"></label>
    </div>
</dom>